def calculate_fitness(self): fitness = 0 for i in range(POPULATION_SIZE): gene = self.genes[i] # 判断树是否超出土地边界 if gene['x'] - TREE_RADIUS < 0 or gene['x'] + TREE_RADIUS > LAND_WIDTH or gene['y'] - TREE_RADIUS < 0 or gene['y'] + TREE_RADIUS > LAND_HEIGHT: continue # 判断树与其他树之间的距离是否足够 for j in range(i + 1, POPULATION_SIZE): other_gene = self.genes[j] distance = math.sqrt((gene['x'] - other_gene['x']) ** 2 + (gene['y'] - other_gene['y']) ** 2) if distance < MIN_DISTANCE: continue # 判断树的高度是否符合要求 if gene['height'] < MIN_HEIGHT or gene['height'] > MAX_HEIGHT: continue # 判断树的覆盖面积是否超出最大值 cover_area = math.pi * (0.596 * gene['height'] - 0.3) ** 2 if cover_area > MAX_COVER_AREA: continue # 计算适应度 fitness += 1 return fitness怎么缩进

代码中的缩进是用来表示代码块的，因此缩进必须正确才能确保代码逻辑正确。在这段代码中，calculate_fitness() 函数中的所有代码都应该缩进，因为它们是该函数的代码块。具体来说，第二行到第十行的代码应该缩进一个 Tab（通常是四个空格），因为它们是 for 循环的代码块；第四行到第九行的代码应该再缩进一个 Tab，因为它们是 if 语句的代码块。最后，return 语句应该与函数定义行对齐，也就是不需要缩进。

相关问题

def calculate_fitness(self): fitness = 0 for i in range(POPULATION_SIZE): gene = self.genes[i] # 判断树是否超出土地边界 if gene['x'] - TREE_RADIUS < 0 or gene['x'] + TREE_RADIUS > LAND_WIDTH or gene['y'] - TREE_RADIUS < 0 or \ gene['y'] + TREE_RADIUS > LAND_HEIGHT: continue怎么缩进

你可以用4个空格进行缩进，这是Python官方文档推荐的方法。例如：

def calculate_fitness(self):
    fitness = 0
    for i in range(POPULATION_SIZE):
        gene = self.genes[i]
        # 判断树是否超出土地边界
        if gene['x'] - TREE_RADIUS < 0 or gene['x'] + TREE_RADIUS > LAND_WIDTH or gene['y'] - TREE_RADIUS < 0 or gene['y'] + TREE_RADIUS > LAND_HEIGHT:
            continue
        # 进一步计算fitness
        # ...
        # ...

注意缩进的空格数要保持一致，不要混用空格和Tab键。